diff --git a/fullscreen/api/document-exit-fullscreen-nested-in-iframe-manual.html b/fullscreen/api/document-exit-fullscreen-nested-in-iframe-manual.html
new file mode 100644
index 00000000000000..11e6a6ac328367
--- /dev/null
+++ b/fullscreen/api/document-exit-fullscreen-nested-in-iframe-manual.html
@@ -0,0 +1,40 @@
+<!DOCTYPE html>
+<title>Document#exitFullscreen() for nested fullscreen inside an iframe</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="../trusted-click.js"></script>
+<iframe allowfullscreen></iframe>
+<script>
+window.t = async_test();
+t.step(() => {
+  const iframe = document.querySelector("iframe");
+  iframe.srcdoc = "<div><div></div></div>";
+  iframe.onload = t.step_func(() => {
+    const doc = iframe.contentDocument;
+    const outer = doc.querySelector("div");
+    const inner = outer.firstChild;
+
+    // First request fullscreen for the outer element.
+    trusted_request(t, outer);
+    doc.onfullscreenchange = t.step_func(() => {
+      assert_equals(document.fullscreenElement, iframe);
+      assert_equals(doc.fullscreenElement, outer);
+
+      // Then request fullscreen for the inner element.
+      trusted_request(t, inner);
+      doc.onfullscreenchange = t.step_func(() => {
+        assert_equals(document.fullscreenElement, iframe);
+        assert_equals(doc.fullscreenElement, inner);
+
+        // Now exit fullscreen for the iframe's content document.
+        doc.exitFullscreen();
+        doc.onfullscreenchange = t.step_func_done(() => {
+          assert_equals(document.fullscreenElement, iframe);
+          assert_equals(doc.fullscreenElement, outer);
+        });
+      });
+    });
+    doc.onfullscreenerror = t.unreached_func("fullscreenerror event");
+  });
+});
+</script>
diff --git a/fullscreen/api/document-exit-fullscreen-nested-manual.html b/fullscreen/api/document-exit-fullscreen-nested-manual.html
new file mode 100644
index 00000000000000..dfd53bc745ee18
--- /dev/null
+++ b/fullscreen/api/document-exit-fullscreen-nested-manual.html
@@ -0,0 +1,31 @@
+<!DOCTYPE html>
+<title>Document#exitFullscreen() for nested fullscreen</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="../trusted-click.js"></script>
+<div><div></div></div>
+<script>
+async_test(t => {
+  const outer = document.querySelector("div");
+  const inner = outer.firstChild;
+
+  // First request fullscreen for the outer element.
+  trusted_request(t, outer);
+  document.onfullscreenchange = t.step_func(() => {
+    assert_equals(document.fullscreenElement, outer);
+
+    // Then request fullscreen for the inner element.
+    trusted_request(t, inner);
+    document.onfullscreenchange = t.step_func(() => {
+      assert_equals(document.fullscreenElement, inner);
+
+      // Now exit fullscreen.
+      document.exitFullscreen();
+      document.onfullscreenchange = t.step_func_done(() => {
+        assert_equals(document.fullscreenElement, outer);
+      });
+    });
+  });
+  document.onfullscreenerror = t.unreached_func("fullscreenerror event");
+});
+</script>
